Expansion Module Option - Trane CVRD Installation Instructions Manual

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Installation manual (30 pages)

Table Of Contents

Table of Contents

The meter is connected to line voltage of up to 480 volts and

should be mounted within the starter cabinet. It is provided with

a mounting bracket that can either be mounted on DIN rail or

directly to cabinet wall. It is mountable using the provided

bracket.

Figure 52. Mount energy meter with strap tunnel on rail

The meter is connected to Modbus communications and is

self-powered by the unit voltage potential inputs. Review meter

literature for setup and operation details.

Modbus communications is by shielded 14 – 26 AWG cable

from meter to Symbio module. Install 120 OHM resistors at first

and last modules on Modbus daisy chain.

Figure 53. Sheilded cable

–

Shielded Wire

120 terminators on the first/last devices of daisy

The communications wiring will be terminated at the Modbus

distribution terminal (1X3) beside Symbio 800 using the 3

poles connector which provide in energy meter kits.

Figure 54. Modbus distribution terminal

SO-SVN037A-EN

chain

Figure 55. Communication wiring, ref. 50712792

OPTIONAL

ENERGY METER

OPTIONAL

4Y1

WI-FI

ANTENNA

480 Volts and Lower Installations

POTENTIAL INPUT – Install provided fused inputs to line

voltage per schematic.

CURRENT INPUT – Install provided Rogowski CTs per

schematic.

Figure 56. 480V Energy meter wiring, ref. 50712756

ENERGY METER OPTION

2T50

X1 X2

2P25

ENERGY METE R

(E23)

2F1 LINE SIDE

2F2 LINE SIDE

2F3 LINE SIDE